SQL - Extract a numeric part of a variable length string - mysql

Question

Here is an example:
[U_TipTon]=118.7->59.35;[U_Haulge]=428.28->214.14
I need to extract just 118.7->59.35 as Tipton, and 428.28->214.14 in another column as U_Haulage.
The length of the string is variable as well as the posision os my pattern word.
I am trying with Patindex but I cannot find the way.

Answer 1

In MySQL there's SUBSTRING_INDEX, which extracts a substring based on a delimiter:
select
substring_index(substring_index(x, '[U_TipTon]=', -1), ';', 1) as TipTon
,substring_index(substring_index(x, '[U_Haulge]=', -1), ';', 1) as Haulge
from
(
select '[U_TipTon]=118.7->59.35;[U_Haulge]=428.28->214.14' as x
) as dt
Edit:
In MS SQL Server it's more complicated:
select
substring(xHaulge, 1, charindex(';', xHaulge + ';')-1) as Haulge,
substring(xTipTon, 1, charindex(';', xTipTon + ';')-1) as TipTon
from
(
select
case when charindex('[U_Haulge]=', x) > 0
then substring(x, charindex('[U_Haulge]=', x) + len('[U_Haulge]='), 8000)
else ''
end as xHaulge,
case when charindex('[U_TipTon]=', x) > 0
then substring(x, charindex('[U_TipTon]=', x) + len('[U_TipTon]='), 8000)
else ''
end as xTipTon
from
(
select '[U_TipTon]=118.7->59.35;[U_Haulge]=428.28->214.14' as x
) as dt
) as dt

Answer 2

The solution was:
case
when charindex('Haulge',t.xField) > 0 then
substring( t.xField , charindex('Haulge',t.xField) + 8,case when charindex(';',substring( t.xField , charindex('Haulge',t.xField) + 8,LEN(t.xField))) = 0
then LEN(t.xField)
else charindex(';',substring( t.xField , charindex('Haulge',t.xField) + 8,LEN(t.xField)))-1 end )
else '-' end [Haul Price]
,case
when charindex('Tipton',t.xField) > 0 then
substring( t.xField , charindex('TipTon',t.xField) + 8,case when charindex(';',substring( t.xField , charindex('Tipton',t.xField) + 8,LEN(t.xField))) = 0
then LEN(t.xField)
else charindex(';',substring( t.xField , charindex('Tipton',t.xField) + 8,LEN(t.xField)))-1 end )
else '-' end [Tip Price]
,case
when charindex('AItmPr',t.xField) > 0 then
substring( t.xField , charindex('AItmPr',t.xField) + 8,case when charindex(';',substring( t.xField , charindex('AItmPr',t.xField) + 8,LEN(t.xField))) = 0
then LEN(t.xField)
else charindex(';',substring( t.xField , charindex('AItmPr',t.xField) + 8,LEN(t.xField)))-1 end )
else '-' end [Additional Price]